[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.38 by root, Thu Nov 1 15:21:13 2007 UTC vs.
Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
32	# include "config.h"	32	# include "config.h"
33	#endif	33	#endif
34		34
35	#include <math.h>	35	#include <math.h>
36	#include <stdlib.h>	36	#include <stdlib.h>
…		…
42	#include <stdio.h>	42	#include <stdio.h>
43		43
44	#include <assert.h>	44	#include <assert.h>
45	#include <errno.h>	45	#include <errno.h>
46	#include <sys/types.h>	46	#include <sys/types.h>
		47	#ifndef WIN32
47	#include <sys/wait.h>	48	# include <sys/wait.h>
		49	#endif
48	#include <sys/time.h>	50	#include <sys/time.h>
49	#include <time.h>	51	#include <time.h>
50		52
		53	/**/
		54
51	#ifndef EV_USE_MONOTONIC	55	#ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 1	56	# define EV_USE_MONOTONIC 1
53	#endif	57	#endif
		58
		59	#ifndef EV_USE_SELECT
		60	# define EV_USE_SELECT 1
		61	#endif
		62
		63	#ifndef EV_USEV_POLL
		64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */
		65	#endif
		66
		67	#ifndef EV_USE_EPOLL
		68	# define EV_USE_EPOLL 0
		69	#endif
		70
		71	#ifndef EV_USE_KQUEUE
		72	# define EV_USE_KQUEUE 0
		73	#endif
		74
		75	#ifndef EV_USE_REALTIME
		76	# define EV_USE_REALTIME 1
		77	#endif
		78
		79	/**/
54		80
55	#ifndef CLOCK_MONOTONIC	81	#ifndef CLOCK_MONOTONIC
56	# undef EV_USE_MONOTONIC	82	# undef EV_USE_MONOTONIC
57	# define EV_USE_MONOTONIC 0	83	# define EV_USE_MONOTONIC 0
58	#endif	84	#endif
59		85
60	#ifndef EV_USE_SELECT
61	# define EV_USE_SELECT 1
62	#endif
63
64	#ifndef EV_USE_EPOLL
65	# define EV_USE_EPOLL 0
66	#endif
67
68	#ifndef CLOCK_REALTIME	86	#ifndef CLOCK_REALTIME
		87	# undef EV_USE_REALTIME
69	# define EV_USE_REALTIME 0	88	# define EV_USE_REALTIME 0
70	#endif	89	#endif
71	#ifndef EV_USE_REALTIME	90
72	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	91	/**/
73	#endif
74		92
75	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
76	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
77	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
78	#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
79		97
80	#include "ev.h"	98	#include "ev.h"
		99
		100	#if __GNUC__ >= 3
		101	# define expect(expr,value) __builtin_expect ((expr),(value))
		102	# define inline inline
		103	#else
		104	# define expect(expr,value) (expr)
		105	# define inline static
		106	#endif
		107
		108	#define expect_false(expr) expect ((expr) != 0, 0)
		109	#define expect_true(expr) expect ((expr) != 0, 1)
		110
		111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
81		113
82	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
83	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
84	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
85		117
86	static ev_tstamp now, diff; /* monotonic clock */
87	ev_tstamp ev_now;
88	int ev_method;
89
90	static int have_monotonic; /* runtime */
91
92	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
93	static void (*method_modify)(int fd, int oev, int nev);
94	static void (*method_poll)(ev_tstamp timeout);
95
96	/*****************************************************************************/	118	/*****************************************************************************/
97		119
98	ev_tstamp	120	typedef struct
		121	{
		122	struct ev_watcher_list *head;
		123	unsigned char events;
		124	unsigned char reify;
		125	} ANFD;
		126
		127	typedef struct
		128	{
		129	W w;
		130	int events;
		131	} ANPENDING;
		132
		133	#ifdef EV_MULTIPLICITY
		134	struct ev_loop
		135	{
		136	# define VAR(name,decl) decl
		137	# include "ev_vars.h"
		138	};
		139	#else
		140	# define VAR(name,decl) static decl
		141	# include "ev_vars.h"
		142	#endif
		143	#undef VAR
		144
		145	/*****************************************************************************/
		146
		147	inline ev_tstamp
99	ev_time (void)	148	ev_time (void)
100	{	149	{
101	#if EV_USE_REALTIME	150	#if EV_USE_REALTIME
102	struct timespec ts;	151	struct timespec ts;
103	clock_gettime (CLOCK_REALTIME, &ts);	152	clock_gettime (CLOCK_REALTIME, &ts);
…		…
107	gettimeofday (&tv, 0);	156	gettimeofday (&tv, 0);
108	return tv.tv_sec + tv.tv_usec * 1e-6;	157	return tv.tv_sec + tv.tv_usec * 1e-6;
109	#endif	158	#endif
110	}	159	}
111		160
112	static ev_tstamp	161	inline ev_tstamp
113	get_clock (void)	162	get_clock (void)
114	{	163	{
115	#if EV_USE_MONOTONIC	164	#if EV_USE_MONOTONIC
116	if (have_monotonic)	165	if (expect_true (have_monotonic))
117	{	166	{
118	struct timespec ts;	167	struct timespec ts;
119	clock_gettime (CLOCK_MONOTONIC, &ts);	168	clock_gettime (CLOCK_MONOTONIC, &ts);
120	return ts.tv_sec + ts.tv_nsec * 1e-9;	169	return ts.tv_sec + ts.tv_nsec * 1e-9;
121	}	170	}
122	#endif	171	#endif
123		172
124	return ev_time ();	173	return ev_time ();
125	}	174	}
126		175
		176	ev_tstamp
		177	ev_now (EV_P)
		178	{
		179	return rt_now;
		180	}
		181
127	#define array_roundsize(base,n) ((n) \| 4 & ~3)	182	#define array_roundsize(base,n) ((n) \| 4 & ~3)
128		183
129	#define array_needsize(base,cur,cnt,init) \	184	#define array_needsize(base,cur,cnt,init) \
130	if ((cnt) > cur) \	185	if (expect_false ((cnt) > cur)) \
131	{ \	186	{ \
132	int newcnt = cur; \	187	int newcnt = cur; \
133	do \	188	do \
134	{ \	189	{ \
135	newcnt = array_roundsize (base, newcnt << 1); \	190	newcnt = array_roundsize (base, newcnt << 1); \
…		…
141	cur = newcnt; \	196	cur = newcnt; \
142	}	197	}
143		198
144	/*****************************************************************************/	199	/*****************************************************************************/
145		200
146	typedef struct
147	{
148	struct ev_io *head;
149	unsigned char events;
150	unsigned char reify;
151	} ANFD;
152
153	static ANFD *anfds;
154	static int anfdmax;
155
156	static void	201	static void
157	anfds_init (ANFD *base, int count)	202	anfds_init (ANFD *base, int count)
158	{	203	{
159	while (count--)	204	while (count--)
160	{	205	{
…		…
164		209
165	++base;	210	++base;
166	}	211	}
167	}	212	}
168		213
169	typedef struct
170	{
171	W w;
172	int events;
173	} ANPENDING;
174
175	static ANPENDING *pendings;
176	static int pendingmax, pendingcnt;
177
178	static void	214	static void
179	event (W w, int events)	215	event (EV_P_ W w, int events)
180	{	216	{
181	if (w->pending)	217	if (w->pending)
182	{	218	{
183	pendings [w->pending - 1].events \|= events;	219	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
184	return;	220	return;
185	}	221	}
186		222
187	w->pending = ++pendingcnt;	223	w->pending = ++pendingcnt [ABSPRI (w)];
188	array_needsize (pendings, pendingmax, pendingcnt, );	224	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
189	pendings [pendingcnt - 1].w = w;	225	pendings [ABSPRI (w)][w->pending - 1].w = w;
190	pendings [pendingcnt - 1].events = events;	226	pendings [ABSPRI (w)][w->pending - 1].events = events;
191	}	227	}
192		228
193	static void	229	static void
194	queue_events (W *events, int eventcnt, int type)	230	queue_events (EV_P_ W *events, int eventcnt, int type)
195	{	231	{
196	int i;	232	int i;
197		233
198	for (i = 0; i < eventcnt; ++i)	234	for (i = 0; i < eventcnt; ++i)
199	event (events [i], type);	235	event (EV_A_ events [i], type);
200	}	236	}
201		237
202	static void	238	static void
203	fd_event (int fd, int events)	239	fd_event (EV_P_ int fd, int events)
204	{	240	{
205	ANFD *anfd = anfds + fd;	241	ANFD *anfd = anfds + fd;
206	struct ev_io *w;	242	struct ev_io *w;
207		243
208	for (w = anfd->head; w; w = w->next)	244	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
209	{	245	{
210	int ev = w->events & events;	246	int ev = w->events & events;
211		247
212	if (ev)	248	if (ev)
213	event ((W)w, ev);	249	event (EV_A_ (W)w, ev);
214	}	250	}
215	}	251	}
216		252
217	/*****************************************************************************/	253	/*****************************************************************************/
218		254
219	static int *fdchanges;
220	static int fdchangemax, fdchangecnt;
221
222	static void	255	static void
223	fd_reify (void)	256	fd_reify (EV_P)
224	{	257	{
225	int i;	258	int i;
226		259
227	for (i = 0; i < fdchangecnt; ++i)	260	for (i = 0; i < fdchangecnt; ++i)
228	{	261	{
…		…
230	ANFD *anfd = anfds + fd;	263	ANFD *anfd = anfds + fd;
231	struct ev_io *w;	264	struct ev_io *w;
232		265
233	int events = 0;	266	int events = 0;
234		267
235	for (w = anfd->head; w; w = w->next)	268	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
236	events \|= w->events;	269	events \|= w->events;
237		270
238	anfd->reify = 0;	271	anfd->reify = 0;
239		272
240	if (anfd->events != events)	273	if (anfd->events != events)
241	{	274	{
242	method_modify (fd, anfd->events, events);	275	method_modify (EV_A_ fd, anfd->events, events);
243	anfd->events = events;	276	anfd->events = events;
244	}	277	}
245	}	278	}
246		279
247	fdchangecnt = 0;	280	fdchangecnt = 0;
248	}	281	}
249		282
250	static void	283	static void
251	fd_change (int fd)	284	fd_change (EV_P_ int fd)
252	{	285	{
253	if (anfds [fd].reify \|\| fdchangecnt < 0)	286	if (anfds [fd].reify \|\| fdchangecnt < 0)
254	return;	287	return;
255		288
256	anfds [fd].reify = 1;	289	anfds [fd].reify = 1;
…		…
258	++fdchangecnt;	291	++fdchangecnt;
259	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	292	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
260	fdchanges [fdchangecnt - 1] = fd;	293	fdchanges [fdchangecnt - 1] = fd;
261	}	294	}
262		295
		296	static void
		297	fd_kill (EV_P_ int fd)
		298	{
		299	struct ev_io *w;
		300
		301	while ((w = (struct ev_io *)anfds [fd].head))
		302	{
		303	ev_io_stop (EV_A_ w);
		304	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		305	}
		306	}
		307
263	/* called on EBADF to verify fds */	308	/* called on EBADF to verify fds */
264	static void	309	static void
265	fd_recheck (void)	310	fd_ebadf (EV_P)
266	{	311	{
267	int fd;	312	int fd;
268		313
269	for (fd = 0; fd < anfdmax; ++fd)	314	for (fd = 0; fd < anfdmax; ++fd)
270	if (anfds [fd].events)	315	if (anfds [fd].events)
271	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
272	while (anfds [fd].head)	317	fd_kill (EV_A_ fd);
		318	}
		319
		320	/* called on ENOMEM in select/poll to kill some fds and retry */
		321	static void
		322	fd_enomem (EV_P)
		323	{
		324	int fd = anfdmax;
		325
		326	while (fd--)
		327	if (anfds [fd].events)
273	{	328	{
274	ev_io_stop (anfds [fd].head);	329	close (fd);
275	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE);	330	fd_kill (EV_A_ fd);
		331	return;
276	}	332	}
277	}	333	}
278		334
279	/*****************************************************************************/	335	/*****************************************************************************/
280
281	static struct ev_timer **timers;
282	static int timermax, timercnt;
283
284	static struct ev_periodic **periodics;
285	static int periodicmax, periodiccnt;
286		336
287	static void	337	static void
288	upheap (WT *timers, int k)	338	upheap (WT *timers, int k)
289	{	339	{
290	WT w = timers [k];	340	WT w = timers [k];
…		…
327		377
328	/*****************************************************************************/	378	/*****************************************************************************/
329		379
330	typedef struct	380	typedef struct
331	{	381	{
332	struct ev_signal *head;	382	struct ev_watcher_list *head;
333	sig_atomic_t volatile gotsig;	383	sig_atomic_t volatile gotsig;
334	} ANSIG;	384	} ANSIG;
335		385
336	static ANSIG *signals;	386	static ANSIG *signals;
337	static int signalmax;	387	static int signalmax;
338		388
339	static int sigpipe [2];	389	static int sigpipe [2];
340	static sig_atomic_t volatile gotsig;	390	static sig_atomic_t volatile gotsig;
341	static struct ev_io sigev;
342		391
343	static void	392	static void
344	signals_init (ANSIG *base, int count)	393	signals_init (ANSIG *base, int count)
345	{	394	{
346	while (count--)	395	while (count--)
…		…
357	{	406	{
358	signals [signum - 1].gotsig = 1;	407	signals [signum - 1].gotsig = 1;
359		408
360	if (!gotsig)	409	if (!gotsig)
361	{	410	{
		411	int old_errno = errno;
362	gotsig = 1;	412	gotsig = 1;
363	write (sigpipe [1], &signum, 1);	413	write (sigpipe [1], &signum, 1);
		414	errno = old_errno;
364	}	415	}
365	}	416	}
366		417
367	static void	418	static void
368	sigcb (struct ev_io *iow, int revents)	419	sigcb (EV_P_ struct ev_io *iow, int revents)
369	{	420	{
370	struct ev_signal *w;	421	struct ev_watcher_list *w;
371	int signum;	422	int signum;
372		423
373	read (sigpipe [0], &revents, 1);	424	read (sigpipe [0], &revents, 1);
374	gotsig = 0;	425	gotsig = 0;
375		426
…		…
377	if (signals [signum].gotsig)	428	if (signals [signum].gotsig)
378	{	429	{
379	signals [signum].gotsig = 0;	430	signals [signum].gotsig = 0;
380		431
381	for (w = signals [signum].head; w; w = w->next)	432	for (w = signals [signum].head; w; w = w->next)
382	event ((W)w, EV_SIGNAL);	433	event (EV_A_ (W)w, EV_SIGNAL);
383	}	434	}
384	}	435	}
385		436
386	static void	437	static void
387	siginit (void)	438	siginit (EV_P)
388	{	439	{
		440	#ifndef WIN32
389	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	441	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
390	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	442	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
391		443
392	/* rather than sort out wether we really need nb, set it */	444	/* rather than sort out wether we really need nb, set it */
393	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	445	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
394	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	446	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		447	#endif
395		448
396	ev_io_set (&sigev, sigpipe [0], EV_READ);	449	ev_io_set (&sigev, sigpipe [0], EV_READ);
397	ev_io_start (&sigev);	450	ev_io_start (&sigev);
		451	ev_unref (EV_A); /* child watcher should not keep loop alive */
398	}	452	}
399		453
400	/*****************************************************************************/	454	/*****************************************************************************/
401		455
402	static struct ev_idle **idles;	456	#ifndef WIN32
403	static int idlemax, idlecnt;
404
405	static struct ev_prepare **prepares;
406	static int preparemax, preparecnt;
407
408	static struct ev_check **checks;
409	static int checkmax, checkcnt;
410
411	/*****************************************************************************/
412
413	static struct ev_child *childs [PID_HASHSIZE];
414	static struct ev_signal childev;
415		457
416	#ifndef WCONTINUED	458	#ifndef WCONTINUED
417	# define WCONTINUED 0	459	# define WCONTINUED 0
418	#endif	460	#endif
419		461
420	static void	462	static void
421	childcb (struct ev_signal *sw, int revents)	463	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
422	{	464	{
423	struct ev_child *w;	465	struct ev_child *w;
		466
		467	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		468	if (w->pid == pid \|\| !w->pid)
		469	{
		470	w->priority = sw->priority; /* need to do it now */
		471	w->rpid = pid;
		472	w->rstatus = status;
		473	event (EV_A_ (W)w, EV_CHILD);
		474	}
		475	}
		476
		477	static void
		478	childcb (EV_P_ struct ev_signal *sw, int revents)
		479	{
424	int pid, status;	480	int pid, status;
425		481
426	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	482	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
427	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	483	{
428	if (w->pid == pid \|\| w->pid == -1)	484	/* make sure we are called again until all childs have been reaped */
429	{	485	event (EV_A_ (W)sw, EV_SIGNAL);
430	w->status = status;	486
431	event ((W)w, EV_CHILD);	487	child_reap (EV_A_ sw, pid, pid, status);
432	}	488	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		489	}
433	}	490	}
		491
		492	#endif
434		493
435	/*****************************************************************************/	494	/*****************************************************************************/
436		495
		496	#if EV_USE_KQUEUE
		497	# include "ev_kqueue.c"
		498	#endif
437	#if EV_USE_EPOLL	499	#if EV_USE_EPOLL
438	# include "ev_epoll.c"	500	# include "ev_epoll.c"
439	#endif	501	#endif
		502	#if EV_USEV_POLL
		503	# include "ev_poll.c"
		504	#endif
440	#if EV_USE_SELECT	505	#if EV_USE_SELECT
441	# include "ev_select.c"	506	# include "ev_select.c"
442	#endif	507	#endif
443		508
444	int	509	int
…		…
451	ev_version_minor (void)	516	ev_version_minor (void)
452	{	517	{
453	return EV_VERSION_MINOR;	518	return EV_VERSION_MINOR;
454	}	519	}
455		520
456	int ev_init (int flags)	521	/* return true if we are running with elevated privileges and should ignore env variables */
		522	static int
		523	enable_secure (void)
457	{	524	{
		525	#ifdef WIN32
		526	return 0;
		527	#else
		528	return getuid () != geteuid ()
		529	\|\| getgid () != getegid ();
		530	#endif
		531	}
		532
		533	int
		534	ev_method (EV_P)
		535	{
		536	return method;
		537	}
		538
		539	int
		540	ev_init (EV_P_ int methods)
		541	{
		542	#ifdef EV_MULTIPLICITY
		543	memset (loop, 0, sizeof (struct ev_loop));
		544	#endif
		545
458	if (!ev_method)	546	if (!method)
459	{	547	{
460	#if EV_USE_MONOTONIC	548	#if EV_USE_MONOTONIC
461	{	549	{
462	struct timespec ts;	550	struct timespec ts;
463	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	551	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
464	have_monotonic = 1;	552	have_monotonic = 1;
465	}	553	}
466	#endif	554	#endif
467		555
468	ev_now = ev_time ();	556	rt_now = ev_time ();
469	now = get_clock ();	557	mn_now = get_clock ();
		558	now_floor = mn_now;
470	diff = ev_now - now;	559	diff = rt_now - mn_now;
471		560
472	if (pipe (sigpipe))	561	if (pipe (sigpipe))
473	return 0;	562	return 0;
474		563
		564	if (methods == EVMETHOD_AUTO)
		565	if (!enable_secure () && getenv ("LIBmethodS"))
		566	methods = atoi (getenv ("LIBmethodS"));
		567	else
475	ev_method = EVMETHOD_NONE;	568	methods = EVMETHOD_ANY;
		569
		570	method = 0;
		571	#if EV_USE_KQUEUE
		572	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		573	#endif
476	#if EV_USE_EPOLL	574	#if EV_USE_EPOLL
477	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	575	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		576	#endif
		577	#if EV_USEV_POLL
		578	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
478	#endif	579	#endif
479	#if EV_USE_SELECT	580	#if EV_USE_SELECT
480	if (ev_method == EVMETHOD_NONE) select_init (flags);	581	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
481	#endif	582	#endif
482		583
483	if (ev_method)	584	if (method)
484	{	585	{
485	ev_watcher_init (&sigev, sigcb);	586	ev_watcher_init (&sigev, sigcb);
		587	ev_set_priority (&sigev, EV_MAXPRI);
486	siginit ();	588	siginit (EV_A);
487		589
		590	#ifndef WIN32
488	ev_signal_init (&childev, childcb, SIGCHLD);	591	ev_signal_init (&childev, childcb, SIGCHLD);
		592	ev_set_priority (&childev, EV_MAXPRI);
489	ev_signal_start (&childev);	593	ev_signal_start (EV_A_ &childev);
		594	ev_unref (EV_A); /* child watcher should not keep loop alive */
		595	#endif
490	}	596	}
491	}	597	}
492		598
493	return ev_method;	599	return method;
494	}	600	}
495		601
496	/*****************************************************************************/	602	/*****************************************************************************/
497		603
498	void	604	void
…		…
509		615
510	void	616	void
511	ev_fork_child (void)	617	ev_fork_child (void)
512	{	618	{
513	#if EV_USE_EPOLL	619	#if EV_USE_EPOLL
514	if (ev_method == EVMETHOD_EPOLL)	620	if (method == EVMETHOD_EPOLL)
515	epoll_postfork_child ();	621	epoll_postfork_child ();
516	#endif	622	#endif
517		623
518	ev_io_stop (&sigev);	624	ev_io_stop (&sigev);
519	close (sigpipe [0]);	625	close (sigpipe [0]);
…		…
523	}	629	}
524		630
525	/*****************************************************************************/	631	/*****************************************************************************/
526		632
527	static void	633	static void
528	call_pending (void)	634	call_pending (EV_P)
529	{	635	{
		636	int pri;
		637
		638	for (pri = NUMPRI; pri--; )
530	while (pendingcnt)	639	while (pendingcnt [pri])
531	{	640	{
532	ANPENDING *p = pendings + --pendingcnt;	641	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
533		642
534	if (p->w)	643	if (p->w)
535	{	644	{
536	p->w->pending = 0;	645	p->w->pending = 0;
537	p->w->cb (p->w, p->events);	646	p->w->cb (EV_A_ p->w, p->events);
538	}	647	}
539	}	648	}
540	}	649	}
541		650
542	static void	651	static void
543	timers_reify (void)	652	timers_reify (EV_P)
544	{	653	{
545	while (timercnt && timers [0]->at <= now)	654	while (timercnt && timers [0]->at <= mn_now)
546	{	655	{
547	struct ev_timer *w = timers [0];	656	struct ev_timer *w = timers [0];
548		657
549	/* first reschedule or stop timer */	658	/* first reschedule or stop timer */
550	if (w->repeat)	659	if (w->repeat)
551	{	660	{
552	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	661	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
553	w->at = now + w->repeat;	662	w->at = mn_now + w->repeat;
554	downheap ((WT *)timers, timercnt, 0);	663	downheap ((WT *)timers, timercnt, 0);
555	}	664	}
556	else	665	else
557	ev_timer_stop (w); /* nonrepeating: stop timer */	666	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
558		667
559	event ((W)w, EV_TIMEOUT);	668	event ((W)w, EV_TIMEOUT);
560	}	669	}
561	}	670	}
562		671
563	static void	672	static void
564	periodics_reify (void)	673	periodics_reify (EV_P)
565	{	674	{
566	while (periodiccnt && periodics [0]->at <= ev_now)	675	while (periodiccnt && periodics [0]->at <= rt_now)
567	{	676	{
568	struct ev_periodic *w = periodics [0];	677	struct ev_periodic *w = periodics [0];
569		678
570	/* first reschedule or stop timer */	679	/* first reschedule or stop timer */
571	if (w->interval)	680	if (w->interval)
572	{	681	{
573	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	682	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
574	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	683	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
575	downheap ((WT *)periodics, periodiccnt, 0);	684	downheap ((WT *)periodics, periodiccnt, 0);
576	}	685	}
577	else	686	else
578	ev_periodic_stop (w); /* nonrepeating: stop timer */	687	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
579		688
580	event ((W)w, EV_PERIODIC);	689	event (EV_A_ (W)w, EV_PERIODIC);
581	}	690	}
582	}	691	}
583		692
584	static void	693	static void
585	periodics_reschedule (ev_tstamp diff)	694	periodics_reschedule (EV_P_ ev_tstamp diff)
586	{	695	{
587	int i;	696	int i;
588		697
589	/* adjust periodics after time jump */	698	/* adjust periodics after time jump */
590	for (i = 0; i < periodiccnt; ++i)	699	for (i = 0; i < periodiccnt; ++i)
591	{	700	{
592	struct ev_periodic *w = periodics [i];	701	struct ev_periodic *w = periodics [i];
593		702
594	if (w->interval)	703	if (w->interval)
595	{	704	{
596	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	705	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
597		706
598	if (fabs (diff) >= 1e-4)	707	if (fabs (diff) >= 1e-4)
599	{	708	{
600	ev_periodic_stop (w);	709	ev_periodic_stop (EV_A_ w);
601	ev_periodic_start (w);	710	ev_periodic_start (EV_A_ w);
602		711
603	i = 0; /* restart loop, inefficient, but time jumps should be rare */	712	i = 0; /* restart loop, inefficient, but time jumps should be rare */
604	}	713	}
605	}	714	}
606	}	715	}
607	}	716	}
608		717
		718	inline int
		719	time_update_monotonic (EV_P)
		720	{
		721	mn_now = get_clock ();
		722
		723	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		724	{
		725	rt_now = mn_now + diff;
		726	return 0;
		727	}
		728	else
		729	{
		730	now_floor = mn_now;
		731	rt_now = ev_time ();
		732	return 1;
		733	}
		734	}
		735
609	static void	736	static void
610	time_update (void)	737	time_update (EV_P)
611	{	738	{
612	int i;	739	int i;
613		740
614	ev_now = ev_time ();	741	#if EV_USE_MONOTONIC
615
616	if (have_monotonic)	742	if (expect_true (have_monotonic))
617	{	743	{
618	ev_tstamp odiff = diff;	744	if (time_update_monotonic (EV_A))
619
620	for (i = 4; --i; ) /* loop a few times, before making important decisions */
621	{	745	{
622	now = get_clock ();	746	ev_tstamp odiff = diff;
		747
		748	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		749	{
623	diff = ev_now - now;	750	diff = rt_now - mn_now;
624		751
625	if (fabs (odiff - diff) < MIN_TIMEJUMP)	752	if (fabs (odiff - diff) < MIN_TIMEJUMP)
626	return; /* all is well */	753	return; /* all is well */
627		754
628	ev_now = ev_time ();	755	rt_now = ev_time ();
		756	mn_now = get_clock ();
		757	now_floor = mn_now;
		758	}
		759
		760	periodics_reschedule (EV_A_ diff - odiff);
		761	/* no timer adjustment, as the monotonic clock doesn't jump */
629	}	762	}
630
631	periodics_reschedule (diff - odiff);
632	/* no timer adjustment, as the monotonic clock doesn't jump */
633	}	763	}
634	else	764	else
		765	#endif
635	{	766	{
636	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	767	rt_now = ev_time ();
		768
		769	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
637	{	770	{
638	periodics_reschedule (ev_now - now);	771	periodics_reschedule (EV_A_ rt_now - mn_now);
639		772
640	/* adjust timers. this is easy, as the offset is the same for all */	773	/* adjust timers. this is easy, as the offset is the same for all */
641	for (i = 0; i < timercnt; ++i)	774	for (i = 0; i < timercnt; ++i)
642	timers [i]->at += diff;	775	timers [i]->at += diff;
643	}	776	}
644		777
645	now = ev_now;	778	mn_now = rt_now;
646	}	779	}
647	}	780	}
648		781
649	int ev_loop_done;	782	void
		783	ev_ref (EV_P)
		784	{
		785	++activecnt;
		786	}
650		787
		788	void
		789	ev_unref (EV_P)
		790	{
		791	--activecnt;
		792	}
		793
		794	static int loop_done;
		795
		796	void
651	void ev_loop (int flags)	797	ev_loop (EV_P_ int flags)
652	{	798	{
653	double block;	799	double block;
654	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	800	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
655		801
656	do	802	do
657	{	803	{
658	/* queue check watchers (and execute them) */	804	/* queue check watchers (and execute them) */
659	if (preparecnt)	805	if (expect_false (preparecnt))
660	{	806	{
661	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	807	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
662	call_pending ();	808	call_pending (EV_A);
663	}	809	}
664		810
665	/* update fd-related kernel structures */	811	/* update fd-related kernel structures */
666	fd_reify ();	812	fd_reify (EV_A);
667		813
668	/* calculate blocking time */	814	/* calculate blocking time */
669		815
670	/* we only need this for !monotonic clockor timers, but as we basically	816	/* we only need this for !monotonic clockor timers, but as we basically
671	always have timers, we just calculate it always */	817	always have timers, we just calculate it always */
		818	#if EV_USE_MONOTONIC
		819	if (expect_true (have_monotonic))
		820	time_update_monotonic (EV_A);
		821	else
		822	#endif
		823	{
672	ev_now = ev_time ();	824	rt_now = ev_time ();
		825	mn_now = rt_now;
		826	}
673		827
674	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	828	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
675	block = 0.;	829	block = 0.;
676	else	830	else
677	{	831	{
678	block = MAX_BLOCKTIME;	832	block = MAX_BLOCKTIME;
679		833
680	if (timercnt)	834	if (timercnt)
681	{	835	{
682	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	836	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
683	if (block > to) block = to;	837	if (block > to) block = to;
684	}	838	}
685		839
686	if (periodiccnt)	840	if (periodiccnt)
687	{	841	{
688	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	842	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
689	if (block > to) block = to;	843	if (block > to) block = to;
690	}	844	}
691		845
692	if (block < 0.) block = 0.;	846	if (block < 0.) block = 0.;
693	}	847	}
694		848
695	method_poll (block);	849	method_poll (EV_A_ block);
696		850
697	/* update ev_now, do magic */	851	/* update rt_now, do magic */
698	time_update ();	852	time_update (EV_A);
699		853
700	/* queue pending timers and reschedule them */	854	/* queue pending timers and reschedule them */
701	timers_reify (); /* relative timers called last */	855	timers_reify (EV_A); /* relative timers called last */
702	periodics_reify (); /* absolute timers called first */	856	periodics_reify (EV_A); /* absolute timers called first */
703		857
704	/* queue idle watchers unless io or timers are pending */	858	/* queue idle watchers unless io or timers are pending */
705	if (!pendingcnt)	859	if (!pendingcnt)
706	queue_events ((W *)idles, idlecnt, EV_IDLE);	860	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
707		861
708	/* queue check watchers, to be executed first */	862	/* queue check watchers, to be executed first */
709	if (checkcnt)	863	if (checkcnt)
710	queue_events ((W *)checks, checkcnt, EV_CHECK);	864	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
711		865
712	call_pending ();	866	call_pending (EV_A);
713	}	867	}
714	while (!ev_loop_done);	868	while (activecnt && !loop_done);
715		869
716	if (ev_loop_done != 2)	870	if (loop_done != 2)
717	ev_loop_done = 0;	871	loop_done = 0;
		872	}
		873
		874	void
		875	ev_unloop (EV_P_ int how)
		876	{
		877	loop_done = how;
718	}	878	}
719		879
720	/*****************************************************************************/	880	/*****************************************************************************/
721		881
722	static void	882	inline void
723	wlist_add (WL *head, WL elem)	883	wlist_add (WL *head, WL elem)
724	{	884	{
725	elem->next = *head;	885	elem->next = *head;
726	*head = elem;	886	*head = elem;
727	}	887	}
728		888
729	static void	889	inline void
730	wlist_del (WL *head, WL elem)	890	wlist_del (WL *head, WL elem)
731	{	891	{
732	while (*head)	892	while (*head)
733	{	893	{
734	if (*head == elem)	894	if (*head == elem)
…		…
739		899
740	head = &(*head)->next;	900	head = &(*head)->next;
741	}	901	}
742	}	902	}
743		903
744	static void	904	inline void
745	ev_clear_pending (W w)	905	ev_clear_pending (EV_P_ W w)
746	{	906	{
747	if (w->pending)	907	if (w->pending)
748	{	908	{
749	pendings [w->pending - 1].w = 0;	909	pendings [ABSPRI (w)][w->pending - 1].w = 0;
750	w->pending = 0;	910	w->pending = 0;
751	}	911	}
752	}	912	}
753		913
754	static void	914	inline void
755	ev_start (W w, int active)	915	ev_start (EV_P_ W w, int active)
756	{	916	{
		917	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		918	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		919
757	w->active = active;	920	w->active = active;
		921	ev_ref (EV_A);
758	}	922	}
759		923
760	static void	924	inline void
761	ev_stop (W w)	925	ev_stop (EV_P_ W w)
762	{	926	{
		927	ev_unref (EV_A);
763	w->active = 0;	928	w->active = 0;
764	}	929	}
765		930
766	/*****************************************************************************/	931	/*****************************************************************************/
767		932
768	void	933	void
769	ev_io_start (struct ev_io *w)	934	ev_io_start (EV_P_ struct ev_io *w)
770	{	935	{
771	int fd = w->fd;	936	int fd = w->fd;
772		937
773	if (ev_is_active (w))	938	if (ev_is_active (w))
774	return;	939	return;
775		940
776	assert (("ev_io_start called with negative fd", fd >= 0));	941	assert (("ev_io_start called with negative fd", fd >= 0));
777		942
778	ev_start ((W)w, 1);	943	ev_start (EV_A_ (W)w, 1);
779	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	944	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
780	wlist_add ((WL *)&anfds[fd].head, (WL)w);	945	wlist_add ((WL *)&anfds[fd].head, (WL)w);
781		946
782	fd_change (fd);	947	fd_change (EV_A_ fd);
783	}	948	}
784		949
785	void	950	void
786	ev_io_stop (struct ev_io *w)	951	ev_io_stop (EV_P_ struct ev_io *w)
787	{	952	{
788	ev_clear_pending ((W)w);	953	ev_clear_pending (EV_A_ (W)w);
789	if (!ev_is_active (w))	954	if (!ev_is_active (w))
790	return;	955	return;
791		956
792	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	957	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
793	ev_stop ((W)w);	958	ev_stop (EV_A_ (W)w);
794		959
795	fd_change (w->fd);	960	fd_change (EV_A_ w->fd);
796	}	961	}
797		962
798	void	963	void
799	ev_timer_start (struct ev_timer *w)	964	ev_timer_start (EV_P_ struct ev_timer *w)
800	{	965	{
801	if (ev_is_active (w))	966	if (ev_is_active (w))
802	return;	967	return;
803		968
804	w->at += now;	969	w->at += mn_now;
805		970
806	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	971	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
807		972
808	ev_start ((W)w, ++timercnt);	973	ev_start (EV_A_ (W)w, ++timercnt);
809	array_needsize (timers, timermax, timercnt, );	974	array_needsize (timers, timermax, timercnt, );
810	timers [timercnt - 1] = w;	975	timers [timercnt - 1] = w;
811	upheap ((WT *)timers, timercnt - 1);	976	upheap ((WT *)timers, timercnt - 1);
812	}	977	}
813		978
814	void	979	void
815	ev_timer_stop (struct ev_timer *w)	980	ev_timer_stop (EV_P_ struct ev_timer *w)
816	{	981	{
817	ev_clear_pending ((W)w);	982	ev_clear_pending (EV_A_ (W)w);
818	if (!ev_is_active (w))	983	if (!ev_is_active (w))
819	return;	984	return;
820		985
821	if (w->active < timercnt--)	986	if (w->active < timercnt--)
822	{	987	{
…		…
824	downheap ((WT *)timers, timercnt, w->active - 1);	989	downheap ((WT *)timers, timercnt, w->active - 1);
825	}	990	}
826		991
827	w->at = w->repeat;	992	w->at = w->repeat;
828		993
829	ev_stop ((W)w);	994	ev_stop (EV_A_ (W)w);
830	}	995	}
831		996
832	void	997	void
833	ev_timer_again (struct ev_timer *w)	998	ev_timer_again (EV_P_ struct ev_timer *w)
834	{	999	{
835	if (ev_is_active (w))	1000	if (ev_is_active (w))
836	{	1001	{
837	if (w->repeat)	1002	if (w->repeat)
838	{	1003	{
839	w->at = now + w->repeat;	1004	w->at = mn_now + w->repeat;
840	downheap ((WT *)timers, timercnt, w->active - 1);	1005	downheap ((WT *)timers, timercnt, w->active - 1);
841	}	1006	}
842	else	1007	else
843	ev_timer_stop (w);	1008	ev_timer_stop (EV_A_ w);
844	}	1009	}
845	else if (w->repeat)	1010	else if (w->repeat)
846	ev_timer_start (w);	1011	ev_timer_start (EV_A_ w);
847	}	1012	}
848		1013
849	void	1014	void
850	ev_periodic_start (struct ev_periodic *w)	1015	ev_periodic_start (EV_P_ struct ev_periodic *w)
851	{	1016	{
852	if (ev_is_active (w))	1017	if (ev_is_active (w))
853	return;	1018	return;
854		1019
855	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1020	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
856		1021
857	/* this formula differs from the one in periodic_reify because we do not always round up */	1022	/* this formula differs from the one in periodic_reify because we do not always round up */
858	if (w->interval)	1023	if (w->interval)
859	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1024	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
860		1025
861	ev_start ((W)w, ++periodiccnt);	1026	ev_start (EV_A_ (W)w, ++periodiccnt);
862	array_needsize (periodics, periodicmax, periodiccnt, );	1027	array_needsize (periodics, periodicmax, periodiccnt, );
863	periodics [periodiccnt - 1] = w;	1028	periodics [periodiccnt - 1] = w;
864	upheap ((WT *)periodics, periodiccnt - 1);	1029	upheap ((WT *)periodics, periodiccnt - 1);
865	}	1030	}
866		1031
867	void	1032	void
868	ev_periodic_stop (struct ev_periodic *w)	1033	ev_periodic_stop (EV_P_ struct ev_periodic *w)
869	{	1034	{
870	ev_clear_pending ((W)w);	1035	ev_clear_pending (EV_A_ (W)w);
871	if (!ev_is_active (w))	1036	if (!ev_is_active (w))
872	return;	1037	return;
873		1038
874	if (w->active < periodiccnt--)	1039	if (w->active < periodiccnt--)
875	{	1040	{
876	periodics [w->active - 1] = periodics [periodiccnt];	1041	periodics [w->active - 1] = periodics [periodiccnt];
877	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1042	downheap ((WT *)periodics, periodiccnt, w->active - 1);
878	}	1043	}
879		1044
880	ev_stop ((W)w);	1045	ev_stop (EV_A_ (W)w);
881	}	1046	}
882		1047
		1048	#ifndef SA_RESTART
		1049	# define SA_RESTART 0
		1050	#endif
		1051
883	void	1052	void
884	ev_signal_start (struct ev_signal *w)	1053	ev_signal_start (EV_P_ struct ev_signal *w)
885	{	1054	{
886	if (ev_is_active (w))	1055	if (ev_is_active (w))
887	return;	1056	return;
888		1057
889	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1058	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
890		1059
891	ev_start ((W)w, 1);	1060	ev_start (EV_A_ (W)w, 1);
892	array_needsize (signals, signalmax, w->signum, signals_init);	1061	array_needsize (signals, signalmax, w->signum, signals_init);
893	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1062	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
894		1063
895	if (!w->next)	1064	if (!w->next)
896	{	1065	{
897	struct sigaction sa;	1066	struct sigaction sa;
898	sa.sa_handler = sighandler;	1067	sa.sa_handler = sighandler;
899	sigfillset (&sa.sa_mask);	1068	sigfillset (&sa.sa_mask);
900	sa.sa_flags = 0;	1069	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
901	sigaction (w->signum, &sa, 0);	1070	sigaction (w->signum, &sa, 0);
902	}	1071	}
903	}	1072	}
904		1073
905	void	1074	void
906	ev_signal_stop (struct ev_signal *w)	1075	ev_signal_stop (EV_P_ struct ev_signal *w)
907	{	1076	{
908	ev_clear_pending ((W)w);	1077	ev_clear_pending (EV_A_ (W)w);
909	if (!ev_is_active (w))	1078	if (!ev_is_active (w))
910	return;	1079	return;
911		1080
912	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1081	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
913	ev_stop ((W)w);	1082	ev_stop (EV_A_ (W)w);
914		1083
915	if (!signals [w->signum - 1].head)	1084	if (!signals [w->signum - 1].head)
916	signal (w->signum, SIG_DFL);	1085	signal (w->signum, SIG_DFL);
917	}	1086	}
918		1087
919	void	1088	void
920	ev_idle_start (struct ev_idle *w)	1089	ev_idle_start (EV_P_ struct ev_idle *w)
921	{	1090	{
922	if (ev_is_active (w))	1091	if (ev_is_active (w))
923	return;	1092	return;
924		1093
925	ev_start ((W)w, ++idlecnt);	1094	ev_start (EV_A_ (W)w, ++idlecnt);
926	array_needsize (idles, idlemax, idlecnt, );	1095	array_needsize (idles, idlemax, idlecnt, );
927	idles [idlecnt - 1] = w;	1096	idles [idlecnt - 1] = w;
928	}	1097	}
929		1098
930	void	1099	void
931	ev_idle_stop (struct ev_idle *w)	1100	ev_idle_stop (EV_P_ struct ev_idle *w)
932	{	1101	{
933	ev_clear_pending ((W)w);	1102	ev_clear_pending (EV_A_ (W)w);
934	if (ev_is_active (w))	1103	if (ev_is_active (w))
935	return;	1104	return;
936		1105
937	idles [w->active - 1] = idles [--idlecnt];	1106	idles [w->active - 1] = idles [--idlecnt];
938	ev_stop ((W)w);	1107	ev_stop (EV_A_ (W)w);
939	}	1108	}
940		1109
941	void	1110	void
942	ev_prepare_start (struct ev_prepare *w)	1111	ev_prepare_start (EV_P_ struct ev_prepare *w)
943	{	1112	{
944	if (ev_is_active (w))	1113	if (ev_is_active (w))
945	return;	1114	return;
946		1115
947	ev_start ((W)w, ++preparecnt);	1116	ev_start (EV_A_ (W)w, ++preparecnt);
948	array_needsize (prepares, preparemax, preparecnt, );	1117	array_needsize (prepares, preparemax, preparecnt, );
949	prepares [preparecnt - 1] = w;	1118	prepares [preparecnt - 1] = w;
950	}	1119	}
951		1120
952	void	1121	void
953	ev_prepare_stop (struct ev_prepare *w)	1122	ev_prepare_stop (EV_P_ struct ev_prepare *w)
954	{	1123	{
955	ev_clear_pending ((W)w);	1124	ev_clear_pending (EV_A_ (W)w);
956	if (ev_is_active (w))	1125	if (ev_is_active (w))
957	return;	1126	return;
958		1127
959	prepares [w->active - 1] = prepares [--preparecnt];	1128	prepares [w->active - 1] = prepares [--preparecnt];
960	ev_stop ((W)w);	1129	ev_stop (EV_A_ (W)w);
961	}	1130	}
962		1131
963	void	1132	void
964	ev_check_start (struct ev_check *w)	1133	ev_check_start (EV_P_ struct ev_check *w)
965	{	1134	{
966	if (ev_is_active (w))	1135	if (ev_is_active (w))
967	return;	1136	return;
968		1137
969	ev_start ((W)w, ++checkcnt);	1138	ev_start (EV_A_ (W)w, ++checkcnt);
970	array_needsize (checks, checkmax, checkcnt, );	1139	array_needsize (checks, checkmax, checkcnt, );
971	checks [checkcnt - 1] = w;	1140	checks [checkcnt - 1] = w;
972	}	1141	}
973		1142
974	void	1143	void
975	ev_check_stop (struct ev_check *w)	1144	ev_check_stop (EV_P_ struct ev_check *w)
976	{	1145	{
977	ev_clear_pending ((W)w);	1146	ev_clear_pending (EV_A_ (W)w);
978	if (ev_is_active (w))	1147	if (ev_is_active (w))
979	return;	1148	return;
980		1149
981	checks [w->active - 1] = checks [--checkcnt];	1150	checks [w->active - 1] = checks [--checkcnt];
982	ev_stop ((W)w);	1151	ev_stop (EV_A_ (W)w);
983	}	1152	}
984		1153
985	void	1154	void
986	ev_child_start (struct ev_child *w)	1155	ev_child_start (EV_P_ struct ev_child *w)
987	{	1156	{
988	if (ev_is_active (w))	1157	if (ev_is_active (w))
989	return;	1158	return;
990		1159
991	ev_start ((W)w, 1);	1160	ev_start (EV_A_ (W)w, 1);
992	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1161	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
993	}	1162	}
994		1163
995	void	1164	void
996	ev_child_stop (struct ev_child *w)	1165	ev_child_stop (EV_P_ struct ev_child *w)
997	{	1166	{
998	ev_clear_pending ((W)w);	1167	ev_clear_pending (EV_A_ (W)w);
999	if (ev_is_active (w))	1168	if (ev_is_active (w))
1000	return;	1169	return;
1001		1170
1002	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1171	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1003	ev_stop ((W)w);	1172	ev_stop (EV_A_ (W)w);
1004	}	1173	}
1005		1174
1006	/*****************************************************************************/	1175	/*****************************************************************************/
1007		1176
1008	struct ev_once	1177	struct ev_once
…		…
1012	void (cb)(int revents, void arg);	1181	void (cb)(int revents, void arg);
1013	void *arg;	1182	void *arg;
1014	};	1183	};
1015		1184
1016	static void	1185	static void
1017	once_cb (struct ev_once *once, int revents)	1186	once_cb (EV_P_ struct ev_once *once, int revents)
1018	{	1187	{
1019	void (cb)(int revents, void arg) = once->cb;	1188	void (cb)(int revents, void arg) = once->cb;
1020	void *arg = once->arg;	1189	void *arg = once->arg;
1021		1190
1022	ev_io_stop (&once->io);	1191	ev_io_stop (EV_A_ &once->io);
1023	ev_timer_stop (&once->to);	1192	ev_timer_stop (EV_A_ &once->to);
1024	free (once);	1193	free (once);
1025		1194
1026	cb (revents, arg);	1195	cb (revents, arg);
1027	}	1196	}
1028		1197
1029	static void	1198	static void
1030	once_cb_io (struct ev_io *w, int revents)	1199	once_cb_io (EV_P_ struct ev_io *w, int revents)
1031	{	1200	{
1032	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1201	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1033	}	1202	}
1034		1203
1035	static void	1204	static void
1036	once_cb_to (struct ev_timer *w, int revents)	1205	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1037	{	1206	{
1038	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1207	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1039	}	1208	}
1040		1209
1041	void	1210	void
1042	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1211	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1043	{	1212	{
1044	struct ev_once *once = malloc (sizeof (struct ev_once));	1213	struct ev_once *once = malloc (sizeof (struct ev_once));
1045		1214
1046	if (!once)	1215	if (!once)
1047	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1216	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1052		1221
1053	ev_watcher_init (&once->io, once_cb_io);	1222	ev_watcher_init (&once->io, once_cb_io);
1054	if (fd >= 0)	1223	if (fd >= 0)
1055	{	1224	{
1056	ev_io_set (&once->io, fd, events);	1225	ev_io_set (&once->io, fd, events);
1057	ev_io_start (&once->io);	1226	ev_io_start (EV_A_ &once->io);
1058	}	1227	}
1059		1228
1060	ev_watcher_init (&once->to, once_cb_to);	1229	ev_watcher_init (&once->to, once_cb_to);
1061	if (timeout >= 0.)	1230	if (timeout >= 0.)
1062	{	1231	{
1063	ev_timer_set (&once->to, timeout, 0.);	1232	ev_timer_set (&once->to, timeout, 0.);
1064	ev_timer_start (&once->to);	1233	ev_timer_start (EV_A_ &once->to);
1065	}	1234	}
1066	}	1235	}
1067	}	1236	}
1068		1237
1069	/*****************************************************************************/	1238	/*****************************************************************************/

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Comparing libev/ev.c (file contents): Revision 1.38 by root, Thu Nov 1 15:21:13 2007 UTC vs. Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.38 by root, Thu Nov 1 15:21:13 2007 UTC vs.
Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC